This is really great – OneNote PM Nicole gave a start (4 1/2 minute) talk at Ignite and it is now online now here. You can see more about Ignite here.
Anyway, Nicole gives a good talk about what a PM is and how to be effective in that role. She even gives a nod to testers right at the end (I noticed that too, Nicole!) and I liked the fast pace of these talks.
Nicole was my partner in crime for the IT Training session we did a few weeks ago (http://www.microsoftvirtualacademy.com/training-courses/organizing-sharing-with-onenote-jump-start) and is a great person to work with in general. It may be worth watching this talk if you want a different viewpoint into the OneNote team.
Questions, comments, concerns and criticisms always welcome, John